Prick both sides of each chicken wing with a toothpick so the marinade can penetrate and the wings cook evenly.
Add the scallions, ginger, salt, and white pepper to the wings and massage everything together with your hands until the pieces feel sticky.
Pour in enough milk to completely submerge the wings.
Cover the bowl with plastic wrap and refrigerate for 4 hours.
Whisk the cornstarch, flour, salt, and baking powder together until evenly combined.
Pour off the milk from the marinated wings and pick out the solids, then add some of the coating mix and one egg to the wings.
Mix everything together with your hands until each wing is evenly coated.
Roll each wing in the remaining coating mix until fully covered.
Turn the wings and press the coating on so both sides are evenly covered.
The wings should look dry and fully coated with the crispy coating mix, with no wet patches showing.
Fry the wings in medium-low oil for about 8 minutes, then raise the oil temperature and fry them a second time for 20 seconds.
Buy the snow cheese powder online and choose the pricier brand, because the flavor is much more authentic.
The wings are now golden and crisp and ready for the cheese powder.
Pour the snow cheese powder into a bowl, add the fried wings, and shake the bowl back and forth so every wing is coated in the snowy cheese powder.
The finished snow cheese chicken wings are coated in a snowy layer of cheese powder and ready to serve.